Energy and Climate

DELSOL

DELSOL is a performance and design code that includes optical and economic analyses. An analytical Hermite polynomial expansion/convolution-of-moments method is used to predict flux images from the heliostats in a computationally efficient manner (typically much faster than either MIRVAL or HELIOS). The code accounts for variations in insolation, cosine forshortening, shadowing and blocking, and spillage, along with atmospheric attenuation, mirror and receiver reflectivity, receiver radiation and convection, and piping losses. The code can be used to evaluate the system levelized energy cost and optimize the field layout, receiver dimensions, and tower height based on these costs. The code is written in FORTRAN77, and input to the code is entered via user-specified text files.

SOLERGY

SOLERGY simulates the operation and annual power output of a solar thermal power plant. It utilizes actual or simulated weather data at time intervals as short as 3 minutes and calculates the net electrical energy output including parasitic power requirements over a 24-hour day. Factors include energy losses in each component of the system, delays incurred during start-up, weather conditions, storage strategies, and power limitations for each component. The original version of SOLERGY (Stoddard et al., 1987) required that the energy collected by the receiver subsystem be sent to thermal storage. The code was later modified to allow the collected energy to bypass storage for analysis of the Solar One power plant (Alpert and Kolb, 1988). The code is written in FORTRAN77, and input to the code is entered via user-specified text files.

Solar Glare and Flux Mapping Tools

Measurement of reflected solar irradiance is receiving significant attention by industry, military, and government agencies to assess potential impacts of glint and glare from growing numbers of solar power installations around the world. In addition, characterization of the incident solar flux distribution on central receivers for concentrating solar power applications is important to monitor and maintain system performance. This website contains free tools to evaluate solar glare and receiver irradiance at www.sandia.gov/phlux.

 

Copyright 2009 Sandia Corporation. Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

A copy of the GNU Lesser General Public License is included in the file http://www.sandia.gov/solar/codes/COPYING-LESSER.TXT along with this program. The GNU Lesser General Public License is also available at http://www.gnu.org/licenses/.

NOTICE:

For five (5) years from 06/29/2009, the United States Government is granted for itself and others acting on its behalf a paid-up, nonexclusive, irrevocable worldwide license in this data to reproduce, prepare derivative works, and perform publicly and display publicly, by or on behalf of the Government. There is provision for the possible extension of the term of this license. Subsequent to that period or any extension granted, the United States Government is granted for itself and others acting on its behalf a paid-up, nonexclusive, irrevocable worldwide license in this data to reproduce, prepare derivative works, distribute copies to the public, perform publicly and siplay publicly, and to permit others to do so. The specific term of the license can be identified by inquiry made to Sandia Corportation or DOE.

NEITHER THE UNITED STATES GOVERNMENT, NOR THE UNITED STATES DEPARTMENT OF ENERGY, NOR SANDIA CORPORATION, NOR ANY OF THEIR EMPLOYEES, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LEGAL RESPONSIBILITY FOR THE ACCURACY, COMPLETENESS, OR USEFULNESS OF ANY INFORMATION, APPARATUS, PRODUCT, OR PROCESS DISCLOSED, OR REPRESENTS THAT ITS USE WOULD NOT INFRINGE PRIVATELY OWNED RIGHTS.

Any licensee of this software has the obligation and responsibility to abide by the applicable export control laws, regulations, and general prohibitions relating to the export of technical data. Failure to obtain an export control license or other authority from the Government may result in criminal liability under U.S. laws.

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